A012403 - OEIS

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A012403

tanh(arctan(x)*log(x+1))=2/2!*x^2-3/3!*x^3-10/5!*x^5-32/6!*x^6...

2, -3, 0, -10, -32, 1596, -10080, 27936, -260928, 1924560, 33929280, -686630880, 4846421760, -42426084960, 778331473920, -1890071554560, -216298842931200, 4070252020032000, -41366803088056320 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	CROSSREFS	`Sequence in context: A175315 A180186 A012399 * A012655 A012650 A111606` `Adjacent sequences: A012400 A012401 A012402 * A012404 A012405 A012406`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 14 14:47 EST 2012. Contains 205623 sequences.